Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 728 | S13 | E01 | 02 | 0010 | alpha | Jan 31, 2005 | Feb 7, 2005 | Feb 21, 2005 |
| № 727 | S09 | W42 | 16 | 0110 | beta-gamma | Jan 28, 2005 | Feb 4, 2005 | Feb 17, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, January. Gray background - average solar cycle.
